CN102213602B - Motor encoder detecting device with multiple power supplies - Google Patents
Motor encoder detecting device with multiple power supplies Download PDFInfo
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- CN102213602B CN102213602B CN 201110146535 CN201110146535A CN102213602B CN 102213602 B CN102213602 B CN 102213602B CN 201110146535 CN201110146535 CN 201110146535 CN 201110146535 A CN201110146535 A CN 201110146535A CN 102213602 B CN102213602 B CN 102213602B
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Abstract
The invention relates to a motor encoder detecting device with multiple power supplies. The detecting device comprises a motor controller, a local power supply, a power supply option switch, a signal input circuit, a signal detecting circuit and an acousto-optic indicating circuit. After the detecting device provided by the invention analyzes the phase position and phase sequence of motor encoder signals, the working state of the motor encoder is indicated in an acousto-optic mode. Compared with the existing detecting device for the motor encoder, the detecting device provided by the invention has the advantages of wide application range, high accuracy, low cost and simple operation.
Description
Technical field
The invention belongs to the automatic control technology field, be specifically related to a kind of many electrical convertors and generators codings
DevicePick-up unit.
Background technology
Motor encoder is as the higher data-collection sensor of a kind of precision, have accurate, reliable, characteristics at a high speed, whether its umber of pulse of often transferring out conforms to nominal value, directly affects the control accuracy of motor closed-loop control system, but through long running, external interference
,The problems such as the high vibration in the long-distance transport way or protection are not enough can be exported the phenomenon of pulse misalignment or phase shortage, thereby cause vehicle operating to be lost efficacy; In addition, at present in the fork truck making-up shop, the motor encoder quality only after fork truck assembling is rolled off the production line, could find during the operation debugging, and then dismounting and change done over again, and has a strong impact on operating efficiency.And the maintenance service that the later stage is located the user, the encoder fault maintenance is judged with maintenance mans' experience.So how under the limited condition of hardware facility, electric motor car low-voltage alternating-current motor scrambler is judged really and accurately, becomes a great problem of electri forklift industry; Therefore judge rapidly, accurately that whether scrambler damages is electri forklift production and an urgent demand of using on-the-spot proposition.
At present, existing industrial motor scrambler intelligent tester must external 220V AC power just can carry out work, and in the electri forklift industry, the electric moter voltage grade is 48V or 80V low-tension supply; And this intelligent detecting instrument does not allow in the situation that steam and dust are heavier uses, and because this instrument belongs to friable product, forbids collision and impacting; Forbid being exposed to the sun in the sun instrument, otherwise easily damage liquid crystal display; Running program is complicated, and is very high to operating personnel's requirement, to avoid damaging because of maloperation the situation of scrambler.Based on the restriction of above condition, this industrial motor scrambler intelligent detecting instrument is not suitable for the check of electri forklift motor encoder.
Chinese patent has been announced the pick-up unit (Zhang Zailei that is used for alternating current motor encoder; Wu Xinli; Ge Liyin; Wang Ying. be used for the pick-up unit of alternating current motor encoder, application number: ZL 201020625088.3, the applying date: 2010.11.26).This device becomes and detects electri forklift with the specialized equipment of alternating current motor encoder, by the measuring voltage value, scrambler voltage, phase signal is analyzed, for the detection of scrambler provides a kind of simple effective method.But this pick-up unit for alternating current motor encoder also has the following disadvantages: (1) can't realize online detection owing to adopting the single power supply testing circuit; (2) by the detection voltage judgement scrambler duty of voltage table, portability and operability have been reduced; And the trueness error double influence of examined personnel's reading error and instrument, be difficult to guarantee the precision that detects; (3) coupling arrangement is complicated, and setup time is long, affects detection efficiency.
Summary of the invention
The objective of the invention is to solve the key technology problems of having applied for a patent middle existence, to provide a kind of range of application wider, precision is higher, definite functions, low-cost motor encoder testing circuit simple to operate.
The improved gordian technique of the present invention is that many power supplys are selected, intuitive display, and pulse width detection is more accurate, to improve accuracy of detection, to widen usable range.
The technical solution used in the present invention is: a kind of many electrical convertors and generators motor encoder detecting comprises local power supply 3, power selection switch 4, signal input circuit 5, signal deteching circuit 6, acousto-optic indicating circuit 7.The input voltage of power selection switch 4 is come from electric machine controller 1, and another road is from local power supply 3; The output voltage of power selection switch 4 is connected to motor encoder 2, signal input circuit 5 and signal deteching circuit 6 and acousto-optic indicating circuit 7; The output signal of motor encoder 2 is transported to testing circuit 6 after signal input circuit 5 arranges, its testing result is by 7 indications of acousto-optic indicating circuit.
The good effect that the present invention is useful is: compare with existing motor encoder pick-up unit, range of application of the present invention is wider, precision is higher, cost is low, simple to operate.
Description of drawings
Fig. 1 is detection circuitry block diagram of the present invention.
Fig. 2 is the concrete a certain representative instance detection circuitry schematic diagram of implementing of the present invention.
Embodiment
The present invention will be further described below in conjunction with embodiment.
As shown in Figure 1 and Figure 2:
A kind of many electrical convertors and generators motor encoder detecting, comprise local power supply 3, power selection switch 4, signal input circuit 5, signal deteching circuit 6, acousto-optic indicating circuit 7, the input voltage of power selection switch 4 is come from electric machine controller 1, and another road is from local power supply 3; The output voltage of power selection switch 4 is connected to motor encoder 2, signal input circuit 5 and signal deteching circuit 6 and acousto-optic indicating circuit 7; The output signal of motor encoder 2 is transported to testing circuit 6 after signal input circuit 5 arranges, its testing result is by 7 indications of acousto-optic indicating circuit.
Power selection switch 4 adopts triac device SW1, and wherein: the SW1-11 of SW1-1, SW1-12, three connection terminals of SW1-13 are connected respectively " A phase " end of " A " end, motor encoder 2, " A phase " end of electric machine controller 1 and are connected with resistance R; The SW1-21 of SW1-2, SW1-22, three connection terminals of SW1-23 are held with " B mutually " of resistance R 4 " B " end, motor encoder 2 respectively, and " B phase " end of electric machine controller 1 connects; " VCC " end of " V+ " end that the SW1-31 of SW1-3, SW1-32, three connection terminals of SW1-33 are connected with motor encoder respectively, the positive pole of local power supply 3, electric machine controller 1 connects.
Acousto-optic indicating circuit 7 is made of resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, triode T1, triode T2, diode D3, diode D4, light emitting diode D5, light emitting diode D6, light emitting diode D7, hummer B1; Triode T1 will from after amplifying with door U1C the 10th pin signal, drive light emitting diode D6 and hummer B1 and realize the acousto-optic indication; Triode T2 will drive light emitting diode D7 and hummer B1 and realizes the acousto-optic indication after amplifying from the signal with door U1D the 11st pin.
Utilize this device detection method:
Detection is divided into online detection and offline inspection, when the SW1-31 of power selection switch and SW1-33 connect, uses local power supply, realizes detecting online; When the SW1-31 of power selection switch and SW1-32 connect, use the 9V battery as power supply, realize offline inspection; No matter detect online or offline inspection, the process of utilizing this device to detect is identical.
After power connection, light emitting diode D5 indication Power supply state, the bright expression power supply of lamp accesses successfully, and detection system can work.Drive the alternating current generator output shaft and make its rotation, pick-up unit is by analyzing A, B phase output signal, judges the motor encoder phase sequence, whether phase place is normal, and then determines whether this scrambler can work.
The A of scrambler output, B phase signals by after isolating with gating element U1A and U1B, enter by C1﹠amp respectively; R3 and C2﹠amp; A channel and B passage differentiating circuit that R4 forms, after producing spiking, obtaining unidirectional pulses by two diodes of D2 and D3 respectively outputs in two other and gating element U1C and U1D, its output data compare computing with the output data of U1A and U1B respectively, then process current-limiting resistance R5 and R6 are input to respectively the base stage of triode T1 and T2, result according to comparison operation, if gating element U1C is output as height, T1 conducting, light emitting diode D9 lights flicker, simultaneously, and due to triode T1 conducting, diode D4 forward conduction, hummer gets electric work.The output of gating element U1D in like manner.
1, normal operating conditions: when the counterclockwise uniform rotation of motor shaft, triode T1 is bright, and hummer B1 sends buzzing; If when the clockwise uniform rotation of motor shaft, triode T1 is bright, hummer B1 sends buzzing (annotate: hummer is selected according to actual conditions as option means).
2, abnormal operating state:
1) after the motor shaft uniform rotation, regardless of direction, triode T1, T2 all do not work, and hummer B1 does not ring.Cause this situation have two kinds may: U/V/W phase sequence and A, B phase signals phase sequence are not mated, perhaps scrambler A, B equal phase shortage mutually.
2) uniform rotation motor shaft, when certain direction, corresponding diode does not work, and hummer does not ring, and when rotating in an opposite direction, corresponding LED lighting, hummer B1 ring, and can be judged as certain phase signals phase shortage.
The output abnormality no matter which kind of reason causes can judge that all scrambler damages, and needs to change.
Claims (1)
1. electrical convertors and generators motor encoder detecting more than a kind, comprise local power supply (3), power selection switch (4), signal input circuit (5), signal deteching circuit (6), acousto-optic indicating circuit (7), it is characterized in that: the input voltage of power selection switch (4) is come from electric machine controller (1), and another road is from local power supply (3); The output voltage of power selection switch (4) is connected to motor encoder (2), signal input circuit (5) and signal deteching circuit (6) and acousto-optic indicating circuit (7); The output signal of motor encoder (2) is transported to signal deteching circuit (6) after signal input circuit (5) arranges, its testing result is indicated by acousto-optic indicating circuit (7);
Power selection switch (4) adopts triac device SW1, and wherein: the contact SW1-31 of the 3rd double throw switch SW1-3, contact SW1-32, contact SW1-33 are connected 2 with motor encoder respectively) " V+ " end, the positive pole of local power supply (3), " VCC " end of electric machine controller (1) connect; The A phase output signal of motor encoder (2) passes in signal input circuit (5) by contact SW1-11, contact SW1-12 resistance R 3 " A " end in signal input circuit (5) of the first double throw switch SW1-1, and the B phase output signal of motor encoder (2) passes in signal input circuit (5) by contact SW1-21, contact SW1-22 resistance R 4 " B " end in signal input circuit (5) of the second double throw switch SW1-2; Motor encoder (2) A phase output signal and B output signal mutually are transported to signal deteching circuit (6) after signal input circuit (5) arranges, its testing result is indicated by acousto-optic indicating circuit (7);
Signal input circuit (5) is by resistance R 1, resistance R 2, resistance R 3, resistance R 4, with a door U1A, consist of with a door U1B, wherein: U1A the 1st pin, the 2nd pin are connected the A end and are connected with resistance R, R3 other end ground connection; Are connected B end with resistance R with door U1B the 5th pin, the 6th pin and are connected, resistance R 4 other end ground connection;
Signal deteching circuit (6) is by with door U1C, consist of with door a U1D, resistance R 5, resistance R 6, capacitor C 1, capacitor C 2, diode D1, diode D2; Wherein be connected 5 with door U1C the 8th pin with signal input circuit) in be connected with door U1B the 4th pin; Be connected 5 with door U1D the 13rd pin with signal input circuit) in be connected with the 3rd pin of door U1A; The 3rd pin with door U1A in the A phase signals process signal input circuit (5) of motor encoder (2) enters the first differential and negative-going pulse amplitude limiter circuit, the first differential and negative-going pulse amplitude limiter circuit are made of resistance R 5, capacitor C 1 and diode D1, the pulse signal that differential and negative-going pulse amplitude limiter circuit are exported shows testing result by outputing to acousto-optic indicating circuit (7) with door U1C the 9th pin in signal deteching circuit (6); The 4th pin with door U1B in the B phase signals process signal input circuit (5) of motor encoder (2) enters the second differential and negative-going pulse amplitude limiter circuit, the second differential and negative-going pulse amplitude limiter circuit are made of resistance R 6, capacitor C 2, diode D2, the pulse signal that the second differential and negative-going pulse amplitude limiter circuit are exported shows testing result by outputing to acousto-optic indicating circuit (7) with door U1D the 12nd pin in signal deteching circuit (6);
Acousto-optic indicating circuit (7) is made of resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, triode T1, triode T2, diode D3, diode D4, light emitting diode D5, light emitting diode D6, light emitting diode D7, hummer B1; The A phase signals of motor encoder (2) is through signal input circuit (5) entering signal testing circuit (6), testing result is from the U1C port output of signal deteching circuit (6), be input to triode T1 base stage, the grounded emitter of triode T1, it is anodal that positive supply VDD positive voltage is received light emitting diode D6, light emitting diode D6 negative pole connects triode T1 collector, realizes luminous indication; It is anodal that positive supply VDD receives hummer B1, and it is anodal that hummer B1 negative pole meets diode D4, and diode D4 negative pole connects the collector of triode T1, realizes the sound indication; Thus, triode T1 will from amplify with the signal of door U1C the 10th pin in signal testing circuit (6), drive light emitting diode D6 and hummer B1 and realize the acousto-optic indication; The B phase signals of motor encoder (2) is through signal input circuit (5) entering signal testing circuit (6), testing result is from the U1D port output of signal deteching circuit (6), be input to triode T2 base stage, the grounded emitter of triode T2, it is anodal that positive supply VDD positive voltage is received light emitting diode D7, light emitting diode D7 negative pole connects triode T2 collector, realizes luminous indication; It is anodal that positive supply VDD receives hummer B1, it is anodal that hummer B1 negative pole meets diode D3, diode D3 negative pole connects the collector of triode T2, realize the sound indication, thus, triode T2 will from amplify with the signal of door U1D the 11st pin in signal testing circuit (6), drive light emitting diode D7 and hummer B1 and realize the acousto-optic indication; Detection is divided into online detection and offline inspection, when the contact SW1-31 of the 3rd double throw switch SW1-3 in power selection switch (4) and contact SW1-33 connect, uses local power supply, realizes detecting online; When the contact SW1-31 of the 3rd double throw switch SW1-3 in power selection switch (4) and contact SW1-32 connect, use the 9V battery as power supply, realize offline inspection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110146535 CN102213602B (en) | 2011-06-02 | 2011-06-02 | Motor encoder detecting device with multiple power supplies |
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| CN 201110146535 CN102213602B (en) | 2011-06-02 | 2011-06-02 | Motor encoder detecting device with multiple power supplies |
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| CN102213602B true CN102213602B (en) | 2013-05-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843314A (en) * | 1988-04-25 | 1989-06-27 | Craig Barnaby | Testing unit for rotary shaft encoders |
| EP1562025A2 (en) * | 2004-02-03 | 2005-08-10 | Fanuc Ltd | Self-diagnosing system for an angle encoder |
| CN201209931Y (en) * | 2008-05-08 | 2009-03-18 | 周国南 | Air humidifier |
| CN101762295A (en) * | 2009-12-04 | 2010-06-30 | 威海华东数控股份有限公司 | On-line detecting device for digital encoder |
| CN201731895U (en) * | 2010-06-22 | 2011-02-02 | 上海理工大学 | Coder testing device based on virtual instrument |
-
2011
- 2011-06-02 CN CN 201110146535 patent/CN102213602B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843314A (en) * | 1988-04-25 | 1989-06-27 | Craig Barnaby | Testing unit for rotary shaft encoders |
| EP1562025A2 (en) * | 2004-02-03 | 2005-08-10 | Fanuc Ltd | Self-diagnosing system for an angle encoder |
| CN201209931Y (en) * | 2008-05-08 | 2009-03-18 | 周国南 | Air humidifier |
| CN101762295A (en) * | 2009-12-04 | 2010-06-30 | 威海华东数控股份有限公司 | On-line detecting device for digital encoder |
| CN201731895U (en) * | 2010-06-22 | 2011-02-02 | 上海理工大学 | Coder testing device based on virtual instrument |
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